Comprehensive CDT Exam
Study Guide – Practice
Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update.
1.- What are wetting agents used on wax patterns for - Answer✔✔-A- Allow
patterns to ease the flow of metal
B- clean the wax pattern for easier divesting
C- helps surface tension thus decreasing nodules on metal castings
D- can help in using less water powder ratio for investments
2.- A depression cut into the patient's abutment tooth to prepare it for a partial
framework is called - Answer✔✔-A-groove
B- connector
C- finish line
D- rest prep
3.·Cusp to fossa occlusion is advantageous over cusp to embrasure occlusion
because - Answer✔✔-A·it causes a " tight" effect
B- provides less balancing interference
,C- it provides more balanced distribution of force
D- is more natural in natural dentition
4.- The bilateral curve between buccal and lingual cusps is called - Answer✔✔-
A- curve of Spee
B- compensating curve
C- curve of Wilson
D- Monson curve
5.- The chroma of a color refers to - Answer✔✔-A- intensity
B- amount of gray
C- amount of orange
D- basic color
6.- When torch soldering, which part of the flame should be used - Answer✔✔-
A- mixing
B- Reducing
C- Combustion
D- oxidizing
7.- The part of the tooth that extends above the gingiva is called - Answer✔✔-
A- cingulum
B- cervical
C- Crown
D- embrasure
,8.- A disadvantage of agar type impression materials is that they must -
Answer✔✔-A- should be poured immediately
B- are not too accurate
C- they give off bad odors
D·hard materials to manage
9.- What is a muscle of facial expression - Answer✔✔-A- masseter
B- orbicularis oris
C- temporalis
D- mylohoid
10.- The most simple articulator,that has no movement other than basic
opening and closing is - Answer✔✔-A-hinge
B- fixed guide
C- semi adjustable
D- fully adjustable
11.- Materials that soften under heat and become solid when cold but do not
change chemically are called - Answer✔✔-A- thermocure
B- thermoset
C- thennogel
D- thermoplastic
12.- What clasp emerges from an occlusal embrasure area and engages the
undercut - Answer✔✔-A- ball clasp
B- arrowhead clasp
, C- Adams clasp
D- all of the above
13.- What happens when gypsum investment is allowed to set under water -
Answer✔✔-A- increases its expansion
B- decreases its expansion
C- uneven expansion
D- there is no expansion
14.- An advantage of using custom impression trays is - Answer✔✔-A- flexibility
B- rigidity
C- uniform thickness of impression material
D- it customizes the impression
15.- A crown sprue and button weighed 7dwt 9gr. After removing crown the
remaining button and sprue wheighed 5dwt llgr What does the crown weigh -
Answer✔✔-A- 2 dwt. 22 gr
B- 2 dwt. 18gr
C- dwt. 22gr
D- 1dwt. 18gr
16.- What combination of gases is most desirable for melting ceramic alloys -
Answer✔✔-A- oxygen and air
B- natural gas (or propane) and oxygen
C- natural gas (or propane) and air
D- acetylene and oxygen
Study Guide – Practice
Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update.
1.- What are wetting agents used on wax patterns for - Answer✔✔-A- Allow
patterns to ease the flow of metal
B- clean the wax pattern for easier divesting
C- helps surface tension thus decreasing nodules on metal castings
D- can help in using less water powder ratio for investments
2.- A depression cut into the patient's abutment tooth to prepare it for a partial
framework is called - Answer✔✔-A-groove
B- connector
C- finish line
D- rest prep
3.·Cusp to fossa occlusion is advantageous over cusp to embrasure occlusion
because - Answer✔✔-A·it causes a " tight" effect
B- provides less balancing interference
,C- it provides more balanced distribution of force
D- is more natural in natural dentition
4.- The bilateral curve between buccal and lingual cusps is called - Answer✔✔-
A- curve of Spee
B- compensating curve
C- curve of Wilson
D- Monson curve
5.- The chroma of a color refers to - Answer✔✔-A- intensity
B- amount of gray
C- amount of orange
D- basic color
6.- When torch soldering, which part of the flame should be used - Answer✔✔-
A- mixing
B- Reducing
C- Combustion
D- oxidizing
7.- The part of the tooth that extends above the gingiva is called - Answer✔✔-
A- cingulum
B- cervical
C- Crown
D- embrasure
,8.- A disadvantage of agar type impression materials is that they must -
Answer✔✔-A- should be poured immediately
B- are not too accurate
C- they give off bad odors
D·hard materials to manage
9.- What is a muscle of facial expression - Answer✔✔-A- masseter
B- orbicularis oris
C- temporalis
D- mylohoid
10.- The most simple articulator,that has no movement other than basic
opening and closing is - Answer✔✔-A-hinge
B- fixed guide
C- semi adjustable
D- fully adjustable
11.- Materials that soften under heat and become solid when cold but do not
change chemically are called - Answer✔✔-A- thermocure
B- thermoset
C- thennogel
D- thermoplastic
12.- What clasp emerges from an occlusal embrasure area and engages the
undercut - Answer✔✔-A- ball clasp
B- arrowhead clasp
, C- Adams clasp
D- all of the above
13.- What happens when gypsum investment is allowed to set under water -
Answer✔✔-A- increases its expansion
B- decreases its expansion
C- uneven expansion
D- there is no expansion
14.- An advantage of using custom impression trays is - Answer✔✔-A- flexibility
B- rigidity
C- uniform thickness of impression material
D- it customizes the impression
15.- A crown sprue and button weighed 7dwt 9gr. After removing crown the
remaining button and sprue wheighed 5dwt llgr What does the crown weigh -
Answer✔✔-A- 2 dwt. 22 gr
B- 2 dwt. 18gr
C- dwt. 22gr
D- 1dwt. 18gr
16.- What combination of gases is most desirable for melting ceramic alloys -
Answer✔✔-A- oxygen and air
B- natural gas (or propane) and oxygen
C- natural gas (or propane) and air
D- acetylene and oxygen
